From: Matthew Rosato <mjrosato@linux.ibm.com>
To: Zhenzhong Duan <zhenzhong.duan@intel.com>, qemu-devel@nongnu.org
Cc: alex.williamson@redhat.com, clg@redhat.com, jgg@nvidia.com,
nicolinc@nvidia.com, joao.m.martins@oracle.com,
eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com,
kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com,
chao.p.peng@intel.com, Thomas Huth <thuth@redhat.com>,
Tony Krowiak <akrowiak@linux.ibm.com>,
Halil Pasic <pasic@linux.ibm.com>,
Jason Herne <jjherne@linux.ibm.com>,
"open list:S390 general arch..." <qemu-s390x@nongnu.org>
Subject: Re: [PATCH v5 13/20] vfio/ap: Allow the selection of a given iommu backend
Date: Thu, 9 Nov 2023 17:57:45 -0500 [thread overview]
Message-ID: <6aa28df3-243e-74ca-d7b4-86656c28004e@linux.ibm.com> (raw)
In-Reply-To: <20231109114529.1904193-14-zhenzhong.duan@intel.com>
On 11/9/23 6:45 AM, Zhenzhong Duan wrote:
> Now we support two types of iommu backends, let's add the capability
> to select one of them. This depends on whether an iommufd object has
> been linked with the vfio-ap device:
>
> if the user wants to use the legacy backend, it shall not
> link the vfio-ap device with any iommufd object:
>
> -device vfio-ap,sysfsdev=/sys/bus/mdev/devices/XXX
>
> This is called the legacy mode/backend.
>
> If the user wants to use the iommufd backend (/dev/iommu) it
> shall pass an iommufd object id in the vfio-ap device options:
>
> -object iommufd,id=iommufd0
> -device vfio-ap,sysfsdev=/sys/bus/mdev/devices/XXX,iommufd=iommufd0
>
> Suggested-by: Alex Williamson <alex.williamson@redhat.com>
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
next prev parent reply other threads:[~2023-11-09 22:58 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-09 11:45 [PATCH v5 00/20] vfio: Adopt iommufd Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 01/20] backends/iommufd: Introduce the iommufd object Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 02/20] util/char_dev: Add open_cdev() Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 03/20] vfio/iommufd: Implement the iommufd backend Zhenzhong Duan
2023-11-10 9:34 ` Cédric Le Goater
2023-11-10 10:18 ` Duan, Zhenzhong
2023-11-13 11:04 ` Cédric Le Goater
2023-11-14 2:58 ` Duan, Zhenzhong
2023-11-11 17:47 ` Nicolin Chen
2023-11-13 3:30 ` Duan, Zhenzhong
2023-11-09 11:45 ` [PATCH v5 04/20] vfio/iommufd: Relax assert check for " Zhenzhong Duan
2023-11-10 9:35 ` Cédric Le Goater
2023-11-09 11:45 ` [PATCH v5 05/20] vfio/iommufd: Add support for iova_ranges and pgsizes Zhenzhong Duan
2023-11-10 9:36 ` Cédric Le Goater
2023-11-10 10:03 ` Duan, Zhenzhong
2023-11-09 11:45 ` [PATCH v5 06/20] vfio/pci: Extract out a helper vfio_pci_get_pci_hot_reset_info Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 07/20] vfio/pci: Introduce a vfio pci hot reset interface Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 08/20] vfio/iommufd: Enable pci hot reset through iommufd cdev interface Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 09/20] vfio/pci: Allow the selection of a given iommu backend Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 10/20] vfio/pci: Make vfio cdev pre-openable by passing a file handle Zhenzhong Duan
2023-11-10 10:52 ` Cédric Le Goater
2023-11-13 3:00 ` Duan, Zhenzhong
2023-11-13 11:08 ` Cédric Le Goater
2023-11-14 3:00 ` Duan, Zhenzhong
2023-11-09 11:45 ` [PATCH v5 11/20] vfio/platform: Allow the selection of a given iommu backend Zhenzhong Duan
2023-11-10 8:50 ` Cédric Le Goater
2023-11-10 9:08 ` Duan, Zhenzhong
2023-11-09 11:45 ` [PATCH v5 12/20] vfio/platform: Make vfio cdev pre-openable by passing a file handle Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 13/20] vfio/ap: Allow the selection of a given iommu backend Zhenzhong Duan
2023-11-09 22:57 ` Matthew Rosato [this message]
2023-11-09 11:45 ` [PATCH v5 14/20] vfio/ap: Make vfio cdev pre-openable by passing a file handle Zhenzhong Duan
2023-11-09 22:57 ` Matthew Rosato
2023-11-09 11:45 ` [PATCH v5 15/20] vfio/ccw: Allow the selection of a given iommu backend Zhenzhong Duan
2023-11-09 22:57 ` Matthew Rosato
2023-11-09 11:45 ` [PATCH v5 16/20] vfio/ccw: Make vfio cdev pre-openable by passing a file handle Zhenzhong Duan
2023-11-09 22:57 ` Matthew Rosato
2023-11-09 11:45 ` [PATCH v5 17/20] vfio: Make VFIOContainerBase poiner parameter const in VFIOIOMMUOps callbacks Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 18/20] hw/arm: Activate IOMMUFD for virt machines Zhenzhong Duan
2023-11-09 11:45 ` [PATCH v5 19/20] kconfig: Activate IOMMUFD for s390x machines Zhenzhong Duan
2023-11-09 23:00 ` Matthew Rosato
2023-11-10 3:16 ` Duan, Zhenzhong
2023-11-10 9:38 ` Cédric Le Goater
2023-11-09 11:45 ` [PATCH v5 20/20] hw/i386: Activate IOMMUFD for q35 machines Zhenzhong Duan
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